Zoltan Haindrich created YARN-8252:
--------------------------------------
Summary: Fix ServiceMaster main not found
Key: YARN-8252
URL: https://issues.apache.org/jira/browse/YARN-8252
Project: Hadoop YARN
Issue Type: Bug
Affects Versions: 3.1.0
Reporter: Zoltan Haindrich
I was looking into using yarn services; however it seems for some reason it is
not possible to run {{ServiceMaster}} class from the jar...I might be missing
some fundamental...so I've put together a shellscript to make it easy for
anyone to check....I would be happy with any exception beyond main not found....
[ServiceMaster.main
method|https://github.com/apache/hadoop/blob/67f239c42f676237290d18ddbbc9aec369267692/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/ServiceMaster.java#L305]
{code:java}
#!/bin/bash
set -e
wget -O core.jar -nv
http://central.maven.org/maven2/org/apache/hadoop/hadoop-yarn-services-core/3.1.0/hadoop-yarn-services-core-3.1.0.jar
unzip -qn core.jar
cat > org/apache/hadoop/yarn/service/ServiceMaster2.java << EOF
package org.apache.hadoop.yarn.service;
public class ServiceMaster2 {
public static void main(String[] args) throws Exception {
System.out.println("asd!");
}
}
EOF
javac org/apache/hadoop/yarn/service/ServiceMaster2.java
jar -cf a1.jar org
find org -name ServiceMaster*
# this will print "asd!"
java -cp a1.jar org.apache.hadoop.yarn.service.ServiceMaster2
#the following invocations result in:
# Error: Could not find or load main class
org.apache.hadoop.yarn.service.ServiceMaster
#
set +e
java -cp a1.jar org.apache.hadoop.yarn.service.ServiceMaster
java -cp core.jar org.apache.hadoop.yarn.service.ServiceMaster
{code}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-dev-unsubscr...@hadoop.apache.org
For additional commands, e-mail: yarn-dev-h...@hadoop.apache.org
